Référence:
TRÉPANIER, Martin, CHAPLEAU, Robert, ALLARD, Bruno (2002). Geographic Information System for Transportation Operations: Models and Specificity, Compte-rendus de la 30e conférence annuelle de la Société canadienne de génie civil, Juin 2002, Montréal, pages 559-568. |
Type:
Conférence avec publication
Organisme:
Autres
Retour
Nouvelle recherche
|
Résumé
The usage of Geographic Information Systems is increasing in transportation planning and engineering. Several research works have shown the ability of this tool to integrate classical planning models as well as new methodologies like the Totally Disaggregate Approach in transportation, which is benefiting from the usage of GIS for its territorial and demand data analysis. Moreover, there is a need for a more "operational" usage of GIS-T, especially in transit authorities, to provide day to day information to the users, or to support the daily operation of the vehicles on the road network. In addition to some software and hardware features, this specific GIS-T usage must also rely on transportation models that are able to integrate huge quantities of information in an operational context.
This article presents an object-oriented model for GIS-T design, development and implementation for operational usage. It is based on the Totally Disaggregate Approach that has been widely used for transportation planning in the Greater Montreal Area since twenty years. The object-oriented model is intended to integrate data from demand, supply, territory and operations in order to bring the GIS-T at an operational level on a daily basis to provide information to user and transit authorities' employees.
Latest developments of the Totally Disaggregate Approach and Transportation Object-Oriented Modeling will be presented, in relation with their inclusion into Geographic Information Systems in Transportation for the Greater Montreal region's applications. The role of planning model in the design of operational software will also be exposed. Then, the object-model of the approach will be illustrated, with its applications. The article will focus on two major topics:
The ability of "informational" models based on the Totally Disaggregate Approach to integrate large quantities of information and, therefore, to fit into GIS-T operational usage for user information, bus routing on street networks and GPS data integration.
The technical challenges brought by operational GIS-T in their daily life such as data updating processes and their impacts on applications, methodology for feedback procedures to bring users into a coproduction process, multiple attributes for transportation objects regarding on the usage of data, transportation models integration on "complete" networks instead of model networks, etc.
The paper will present several sample applications from our research works of the latter years in the Greater Montreal area. |